Steam iron



FIG. 1 is a perspective view of a steam iron showing my new design;

FIG. 2 is a left-side elevational view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a bottom view showing the side opposite that in FIG. 3;

FIG. 5 is a front view of FIG. 1; and,

FIG. 6 is a rear view showing the side opposite that in FIG. 5.

The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a steam iron, as shown and described. 